Wärtsilä is a world leader in marine technology and leading the industry's transformation towards a decarbonised and sustainable future. With the world’s widest portfolio and service network, we – Wärtsilians - deliver efficient, safe and sustainable integrated products and solutions to enhance the business of our customers. The opportunities presented through digitalisation and new technologies are offering a new era of shipping. Did you know that shipping is the world’s most efficient mode of transportation and that 88% of the world's trade is carried by sea?

We want to change the course towards an interconnected and cleaner maritime future and are constantly on the lookout for future-oriented talent to join our team and to work towards enabling sustainable societies through innovation in technology and services - together. Are you ready to jump onboard?

We are on the lookout for a talent with a desire to decarbonize our energy and to participate in open source software development. Are you the one? 

We are looking for a Expert, Thermofluids & Simulations with a main responsibility in new decarbonized fuels and heat management simulations. The preferred location for this position is in Vaasa, Finland but Turku, Finland and Trieste, Italy are also possible. 
  

Your role and responsibilities:  

As a CFD and combustion expert your work will include developing new engine concepts of our decarbonized future. The specific tasks can also be adjusted based on your individual skills and interests but typically include physics model developments and software integration while running complex engine simulations. You will be working in the very international Thermofluids & Simulations team with a focus on OpenFOAM simulations. 

Requirements for the position:

• Proficiency in OpenFOAM software and numerics
• Good knowledge of combustion physics and modelling
• Good knowledge in Conjugate Heat Transfer and modelling

As an ideal candidate you might also have:

• Experience in CAD and meshing
• Software development and C++ experience
• Good communication skills and an appetence to share your knowledge

Why you and us?   

You are valuated – as your true self. At Wärtsilä YOU matter. We value diversity and are committed in supporting inclusive work community.  

Your growth is supported. We believe in continuous learning & teamwork. Wärtsilian community has your back when it comes to development opportunities – so you can develop beyond your potential.  

You get to make a difference. Innovation and sustainability are important for us. Every day, we - Wärtsilians - put our hearts and minds into enabling sustainable societies through innovation in technology and services into reality.   

Contact & next steps:
  

Please submit your application by 24.11.2025 through our Careers portal. Applications through email will not be considered. After submitting your application you’ll receive a confirmation email. We try our best to get back to everyone within 2-3 weeks after application deadline.   

In case of any questions, reach out to:

Éric Lendormy, Manager Thermofluids & Simulations 

eric.lendormy@wartsila.com 

Last application date: 24/11/2025 

At Wärtsilä we value, respect and embrace all our differences, and are committed to diversity, inclusion and equal employment opportunities; everyone can be their true self and succeed based on their job-relevant merits and abilities.

Please note that according to Wärtsilä policy, voluntary consent for a security check may be required from candidates being considered for this position, depending on the applicable country. All new Wärtsilä employees in Finland will attend occupational health checks, including drug tests/screenings where applicable. When a person is located outside of Finland, the country legislation is followed.

This is Wärtsilä 

Wärtsilä is a global leader in innovative technologies and lifecycle solutions for the marine and energy markets. Our team of 18,300 professionals, in more than 230 locations in 77 countries, shape the decarbonisation transformation of our industries across the globe. Read more on www.wartsila.com.